1
Corinne Cabassud, Philippe Aptel: Process for cleaning mesoporous tubular ultrafiltration membranes. Dumez Lyonnaise Eaux, October 2, 1992: FR2674448-A1 (76 worldwide citation)

Process for cleaning mesoporous tubular ultrafiltration membranes fitted as a bundle in a housing, with bounding of a concentrate compartment where the retained substances accumulate both in suspension and on the membranes, and of a permeate compartment collecting the filtered liquid, characterised ...


2
Philippe Aptel, Jean Michel Espenan: Hollow fibers production method thereof and their applications particularly in the field of membrane-type separations. Institut National de Recherche Chimique Appliquee, Centre National de la Recherche Scientifique, Browdy and Neimark, November 21, 1989: US04882223 (51 worldwide citation)

Non symmetrical hollow fibres presenting a relatively dense layer (`skin`) (H) of a very small thickness (<1 .mu.m) at their outer periphery, which is bound to a so called `open` structure of which the porosity increases in the direction to the inner face; said porous structure comprises microvoids ...


3
Philippe Aptel, Jean Michel Espenan: Process for extruding semi-permeable membrane having separate hollow passageways. Societe Lyonnaise des Eaux, Harold H Dutton Jr, December 15, 1992: US05171493 (13 worldwide citation)

A process for the production of a porous organic material, in particular an organic semi-permeable membrane, provided with a plurality of separate passageways, comprising dissolving a polymer in a solvent, using a drawplate comprising needles having a shape conjugate with that of the passageways and ...


4
Jun K Liou, Philippe Aptel: Method of fabricating a perforated plate for a hollow fiber separator apparatus, and devices obtained thereby. Lyonnaise Des Eaux, Amster Rothstein & Ebenstein, April 17, 1990: US04917798 (7 worldwide citation)

A method of fabricating a tube plate for a hollow fiber separator apparatus, from a set of hollow fibers with an end of the set being embedded in a resin, wherein the set of hollow fibers is subdivided into a plurality of elementary bundles, at least a first end of each elementary fiber is enclosed ...


5
Philippe Aptel, Jean Michel Espenan: Process for producing a semi-permeable membrane by extrusion. Societe Lyonnaise des Eaux, Harold H Dutton Jr, February 18, 1992: US05089187 (6 worldwide citation)

A process for the production of a porous organic material, in particular a semi-permeable membrane, comprising a plurality of separate passageways, including dissolving a polymer in a solvent, using a drawplate having needles of a shape conjugate with those of the passageways and of external dimensi ...


6
Patricia Rouzies, Nouhad Abidine, Philippe Aptel: Selectively permeable membranes containing an immobilised hydrophilic gel and their preparation. Dumez Lyonnaise Eaux, September 17, 1993: FR2688418-A1 (1 worldwide citation)

Selectively permeable membrane consisting of a support membrane containing a continuous network of a water-insoluble and hydrophilic gel capable of swelling in the presence of water. Examples of such gels are dextran gel crosslinked with dimethylolurea or polycondensed dimethylolurea gels. In additi ...


7
Jean Christophe Remigy, Philippe Aptel, Sandrine Desclaux, Alain Ricard: Method for making a nanofiltration membrane, and resulting membrane. Young & Thompson, October 31, 2002: US20020161066-A1

The invention concerns a method for producing a nanofiltration membrane. At least one face (30) of a porous membrane (3) is put in the presence of a grafting composition comprising at least one monomer grafted by radical polymerisation and at least one crosslinking agent, that is however free from p ...